package com.zat.mes.andrmes.utils;

import android.app.Activity;
import android.hardware.Camera;
import android.view.Surface;

/**
 * @author zy
 * @date :2020-05-29 16:34
 * @description:
 */
public class CameraUtil {

    public static void setCameraDisplayOrientation(Activity activity,

                                                   int cameraId, android.hardware.Camera camera) {

        android.hardware.Camera.CameraInfo info =

                new android.hardware.Camera.CameraInfo();

        android.hardware.Camera.getCameraInfo(cameraId, info);

        int rotation = activity.getWindowManager().getDefaultDisplay()

                .getRotation();

        int degrees = 0;

        switch (rotation) {

            case Surface.ROTATION_0:
                degrees = 0;
                break;

            case Surface.ROTATION_90:
                degrees = 90;
                break;

            case Surface.ROTATION_180:
                degrees = 180;
                break;

            case Surface.ROTATION_270:
                degrees = 270;
                break;

        }

        int result;

        if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {

            result = (info.orientation + degrees) % 360;

            result = (360 - result) % 360;// compensate the mirror

        } else {// back-facing

            result = (info.orientation - degrees + 360) % 360;

        }

        camera.setDisplayOrientation(result);//显示翻转result度

    }


}
